Interferometric study of the growth kinetics of K2Co(SO4)2 · 6H2O and K2Ni(SO4)2 · 6H2O crystals

• Published in: Crystallography reports Vol. 62; no. 6; pp. 983 - 992
• Main Authors: Grebenev, V. V., Kovalyov, S. I., Voloshin, A. E., Manomenova, V. L., Rudneva, E. B., Vorontsov, D. A., Vasilyeva, N. A., Masalov, V. M., Zhokhov, A. A., Emelchenko, G. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.11.2017; Springer Nature B.V
• Subjects: Crystal Growth; Crystallography and Scattering Methods; Kinetic coefficients; Kinetics; Laser interferometry; Physics; Physics and Astronomy; Supersaturation
• ISSN: 1063-7745; 1562-689X
• DOI: 10.1134/S106377451706013X

The growth kinetics of the (001) and (110) faces of K 2 Co(SO 4 ) 2 · 6H 2 O and K 2 Ni(SO 4 ) 2 · 6H 2 O crystals in the kinetic mode has been in situ investigated for the first time by laser interferometry. The method used makes it possible to measure the slope p of the growing vicinal hillock and the normal growth rate R . The average step velocity ν = R/p as a function of supersaturation σ has been calculated based on these data. The kinetic coefficients of steps are determined. Some conclusions on the optimal growth conditions for crystals are drawn.